<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>select元素</title>
</head>
<body>
<form>
  <select name="sex">
    <option value="man" selected>男</option>
    <option value="woman">女</option>
  </select>
</form>
</body>
</html>